To Prove
|
:
|
PQ
|
=
|
QR
|
=
|
1
|
PR
|
√2
|
PQ
|
=
|
1
|
PR
|
√2
|
∴
|
PQ
|
=
|
QR
|
=
|
1
|
PR
|
From eq (1)
|
√2
|
To Prove
|
:
|
PQ
|
=
|
QR
|
=
|
1
|
PR
|
√2
|
PQ
|
=
|
1
|
PR
|
√2
|
∴
|
PQ
|
=
|
QR
|
=
|
1
|
PR
|
From eq (1)
|
√2
|